class variable won't icrement!

[Roman Yakovenko]

Hi it is simple just change 
self.id = self.id + 1 

To 

test.id += 1

Roman

> -----Original Message-----
> From: Gumuz [mailto:gumuz at amoebe.looze.net]
> Sent: Thursday, September 12, 2002 10:55 AM
> To: python-list at python.org
> Subject: class variable won't icrement!
> 
> 
> Hello everyone,
> 
> I have something very strange and i can not understand it. 
> probably, it's
> not _that_ strange : )
> 
> I have this simple class which registers itself on a class 
> variable in the
> following code:
> 
> --------------------------------------------------------------
> --------------
> ------
> class test:
>     dict = {}
>     id = 1
>     def __init__(self, name):
>         self.dict[name] = self
>         self.id = self.id + 1
> 
>     def show(self):
>         print "class variable dict element count: ", 
> str(len(self.dict))
>         print "class variable id: ", self.id
> --------------------------------------------------------------
> --------------
> --------
> 
> now, look at the following:
> 
> >>> john = test("john")
> >>> frank = test("frank")
> >>> bill = test("bill")
> >>> bill.show()
> class variable dict element count:  3
> class variable id:  2
> >>> frank.show()
> class variable dict element count:  3
> class variable id:  2
> 
> The dict variable acts fine, maintaining it's content throughout every
> instance of the class.
> The id variable however, seems to be only incremented within 
> the instance.
> In the end this variable should've been 4.
> 
> Could someone explain this to me? Is there something about 
> class variables
> whta i should know?
> 
> many thanx,
> Guyon
> 
> 
> 
> 
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